x=int(input())
for i in range(8):
    if x<400+(i+1)*200:
        print(8-i)
        break x=int(input()) x int(input()) int input() input for i in range(8):
    if x<400+(i+1)*200:
        print(8-i)
        break i range(8) range 8 if x<400+(i+1)*200:
        print(8-i)
        break x<400+(i+1)*200 x 400+(i+1)*200 400 (i+1)*200 i+1 i 1 200 print(8-i) print 8-i 8 i break x=int(input()) int(input()) x
x=int(input())
for i in range(8):
    if x<400+(i+1)*200:
        print(8-i)
        break